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Journal of Systems Engineering and Electronics 2019年第1期30卷 78-84页

作者： XIE Xianming ZENG Qingning School of Information and Communication Guilin University of Electronic Technology

This paper proposes a new multi-baseline extended particle filtering phase unwrapping algorithm which combines an extended particle filter with an amended matrix pencil model and a quantized path-following strategy. The contributions to multibaseline synthetic aperture radar(SAR) interferometry are as follows: a new recursive multi-baseline phase unwrapping model based on an extended particle filter is built, and the amended matrix pencil model is used to acquire phase gradient information with a higher precision and lower computational cost, and the quantized path-following strategy is introduced to guide the proposed phase unwrapping procedure to efficiently unwrap wrapped phase image along the paths routed by a phase derivative variance map.

关键词： multi-baseline phase unwrapping interferometric synthetic aperture radar (InSAR) extended particle filter.

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THE COHERENCE COEFFICIENT MAP AND RESIDUE GUIDED LEAST SQUARE PHASE unwrapping ALGORITHM

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Geo-Spatial Information Science 1999年第1期2卷 55-62页

作者： Zhang Li Liao Mingsheng Zhang Zuxun Zhang Yong National Laboratory for Information Engineering in Surveying Mapping and Remote Sensing WTUSM Wuhan China

The generation of high-resolution DEM from interferometric SAR has resulted in the need for accurate and efficient methods of 2-dimensional phase unwrapping. In this paper, we give a brief description of the mathematical base of phase unwrapping, and a detailed description of the unweighted and weighted least square phase unwrapping *** our algorithm combining with the weighted least square phase unwrapping guided by the branch-cuts derived from Goldstein’ s algorithm and coherence coefficient map derived from the INSAR data is provided. In our experiment we write subroutines of the Goldstein’s branch-cut algorithm,unweighted and weighted least square phase unwrapping algorithm as well as our algorithm,and construct a small experiment system to resolve the phase unwrapping problem. Finally we test our algorithm on some INSAR data. The result shows that our approach can obtain unwrapped phase correctly and efficiently.

关键词： 2-dimensional phase unwrapping interferometric SAR coherence coefficient map weighted least square phase unwrapping branch-cuts

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Phase unwrapping in Magnetic Resonance Elastography

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Open Journal of Medical Imaging 2018年第4期8卷 111-125页

作者： Surendra Maharjan Tomokazu Numano Tetsushi Habe Daiki Ito Takamichi Ueki Keisuke Igarashi Toshiki Maeno Department of Radiological Sciences Graduate School of Human Health Sciences Tokyo Metropolitan University Tokyo Japan Health Research Institute National Institute of Advanced Industrial Science and Technology Tsukuba Japan Office of Radiation Technology Keio University Hospital Tokyo Japan

Phase unwrapping (PU) is an ill-posed problem in Magnetic Resonance Elastography (MRE). The phase information is not usable until the phases are retrieved by using PU algorithms. In this present study, we attempt to determine the ideal PU method for MRE using both phantom and volunteer psoas major (PM) muscle images. All the MRE experiments were carried out in Philips MRI (Achieva 3.0 T, Best, The Netherlands). A multi-echo gradient-echo MRE pulse sequence was employed and the four PU methods were considered based on their easy user platform. They are namely, Minimum Discontinuity (MD), Laplacian-Based Estimate (LBE), Region Growing (RG) and Dilate-Erode (DE) Propagate. Phantom images were successfully unwrapped by all four methods, whereas MD and LBE could only unwrap PM muscle images properly. RG and DE failed to unwrap the PM muscle images.

关键词： Phase unwrapping Magnetic Resonance Elastography Minimum Discontinuity Laplacian-Based Estimate Region Growing Dilate-Erode Propagate

Phase Measurement Algorithm without Phase-unwrapping Problem for Phase-stepping interferometry

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Chinese Journal of Lasers 1999年第1期 35-39页

作者： WEI Chunlong CHEN Mingyi * HOU Weidong WANG Zhijiang ** (Department of Communication Engineering, Shanghai University (Jiading Campus), Shanghai 201800, China * Department of Mechanical Engineering, Shanghai University (Jiading

１ＩｎｔｒｏｄｕｃｔｉｏｎＰｈａｓｅｓｔｅｐｐｉｎｇｉｎｔｅｒｆｅｒｏｍｅｔｒｙｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙａｐｐｌｉｅｄｉｎｍａｎｙａｓｐｅｃｔｓ．Ｃｏｎｖｅｎｔｉｏｎａｌｐｈａｓｅｕｎｗｒａｐｐｉｎｇｉ... 详细信息

１ＩｎｔｒｏｄｕｃｔｉｏｎＰｈａｓｅｓｔｅｐｐｉｎｇｉｎｔｅｒｆｅｒｏｍｅｔｒｙｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙａｐｐｌｉｅｄｉｎｍａｎｙａｓｐｅｃｔｓ．Ｃｏｎｖｅｎｔｉｏｎａｌｐｈａｓｅｕｎｗｒａｐｐｉｎｇｉｓｉｍｐｌｅｍｅｎｔｅｄｂｙｔｈ...

关键词： phase stepping algorithm unwrapping interferometry

Multichannel DEM reconstruction method based on Markov random fields for bistatic SAR

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Science China(Information Sciences) 2015年第6期58卷 39-52页

作者： HONG Feng TANG JiangWen LU PingPing Institute of Electronics Chinese Academy of Sciences(IECAS) Department of Space Microwave Remote Sensing System University of Chinese Academy of Sciences

It appears very interesting and particularly useful to perform DEM reconstruction with the configuration of multichannel bistatic SAR(Bi SAR) because of its considerable advantages. In typical processing flow of multichannel interferometric synthetic aperture radar(In SAR), techniques based on statistical methods or iterative methods does not work very well with limits of specific Bi SAR configurations. Moreover, the tradeoff between the correctness and precision of the reconstruction of different baselines needs to be overcome as *** on the advantages of multichannel Bi SAR configuration, basic idea is the joint utilization of amplitude data, iterative reconstruction results and ML results to help the optimization of the total MRF energy ***, a multichannel DEM reconstruction method based on Markov Random Fields(MRFs) for Bi SAR, which concerns much about discontinuities and energy functions, is proposed to achieve not only correct but also more precise results. Afterward, the strategy to determine the weight parameter and processing flow is ***, simulated and real data experiments are given to validate the proposed method.

关键词： interferometric synthetic aperture radar(In SAR) Markov random fields(MRFs) unwrapping multichannel/multibaseline bistatic SAR(B

AN ALGORITHM FOR INTERFEROMETRIC SAR DATA PROCESSING

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Journal of Electronics(China) 2000年第3期17卷 202-207页

作者： Huang Yan Xu Huaping Chen JieLi Chunsheng Li Jingwen Zhou Yinqin(Dept. of Electron. Eng., Beijing University of Aeronautics and Astronautics, Beijing 100083)

In this paper, an algorithm of generating INSAR unwrapped phase image from SAR single-look complex images is presented. Besides the general processing technique, this article focuses on the methods of flat-earth phase removal, phase noise reduction and phase unwrapping. The availability is tested by the results of processing ERS-1/2 SAR images.

关键词： Interferometric synthetic aperture radar Interferometric phase noise reduction Phase unwrapping

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